// 引入axios
import axios from 'axios'
import util from './util'

let cancel
let promiseArr = {}
const CancelToken = axios.CancelToken
// const message = {}
// 请求拦截器
axios.interceptors.request.use(
  config => {
    // 发起请求时，取消掉当前正在进行的相同请求
    if (promiseArr[config.url]) {
      promiseArr[config.url]('操作取消')
      promiseArr[config.url] = cancel
    } else {
      promiseArr[config.url] = cancel
    }
    return config
  },
  error => {
    return Promise.reject(error)
  }
)

// 响应拦截器即异常处理
axios.interceptors.response.use(
  response => {
    return response
  },
  err => {
    if (err && err.response) {
      switch (err.response.status) {
        case 400:
          err.message = '错误请求'
          break
        case 401:
          err.message = '未授权，请重新登录'
          break
        case 403:
          err.message = '拒绝访问'
          break
        case 404:
          err.message = '请求错误,未找到该资源'
          break
        case 405:
          err.message = '请求方法未允许'
          break
        case 408:
          err.message = '请求超时'
          break
        case 500:
          err.message = '服务器端出错'
          break
        case 501:
          err.message = '网络未实现'
          break
        case 502:
          err.message = '网络错误'
          break
        case 503:
          err.message = '服务不可用'
          break
        case 504:
          err.message = '网络超时'
          break
        case 505:
          err.message = 'http版本不支持该请求'
          break
        default:
          err.message = `连接错误${err.response.status}`
      }
    } else {
      err.message = '连接到服务器失败'
    }
    // message.err(err.message)
    return Promise.resolve(err.response)
  }
)

// axios.defaults.baseURL = '/carManage'
// axios.defaults.baseURL = '/api'
axios.defaults.baseURL = 'http://yuexunsoft.88ip.cn:6060/szhg-baseWeb'

// 设置默认请求头
axios.defaults.headers = {
  'X-Requested-With': 'XMLHttpRequest',
  'Content-Type': 'application/x-www-form-urlencoded' // 必须设置，否则post请求的时候 参数会变成一个对象
}
axios.defaults.timeout = 10000

export default {
  // get请求
  get (url, param) {
    return new Promise((resolve, reject) => {
      param.session = localStorage.getItem('session') || ''
      axios({
        method: 'get',
        url,
        params: param,
        cancelToken: new CancelToken(c => {
          cancel = c
        })
      }).then(res => {
        resolve(res)
      })
    })
  },
  // post请求
  post (url, param) {
    return new Promise((resolve, reject) => {
      // 手机端需要添加session 令牌
      param.session = localStorage.getItem('session') || ''
      // 序列化参数 否则传输的是一个对象
      let querystring = require('querystring')
      param = querystring.stringify(param)
      util.loading()
      axios({
        method: 'post',
        url,
        data: param,
        cancelToken: new CancelToken(c => {
          cancel = c
        })
      }).then(res => {
        resolve(res)
        util.loadingClose()
      })
    })
  }
}
